Analysis
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max time kernel
151s -
max time network
119s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
27-12-2022 14:53
Static task
static1
Behavioral task
behavioral1
Sample
b5a8f27b7cbd207386168a43f3f0ee85a18863fcb4c7fedefc3a978f9c919926.exe
Resource
win10v2004-20220812-en
General
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Target
b5a8f27b7cbd207386168a43f3f0ee85a18863fcb4c7fedefc3a978f9c919926.exe
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Size
297KB
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MD5
942ff8a9066bdd69149f5412636ffd6e
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SHA1
a67e488f806352d53d867d479d1898a7886014e0
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SHA256
b5a8f27b7cbd207386168a43f3f0ee85a18863fcb4c7fedefc3a978f9c919926
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SHA512
cc80f725ca9c9a1ede7f2684f522665998363a4ea582e729b1444047fd330c6b228573f858142b4dd9d6409e76cb90fc031a26df0e0ae3005f552489a40cf887
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SSDEEP
6144:8aeL3R/8NFXdE4HUEhz34IUTXLC58xQ3xDPkMo5zXbAc:tezR+Xm4HUIz/uLC58xaxDPyrbA
Malware Config
Signatures
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Detects Smokeloader packer 1 IoCs
resource yara_rule behavioral1/memory/4584-133-0x00000000004C0000-0x00000000004C9000-memory.dmp family_smokeloader -
SmokeLoader
Modular backdoor trojan in use since 2014.
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Downloads MZ/PE file
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Executes dropped EXE 1 IoCs
pid Process 4576 6A24.exe -
Loads dropped DLL 1 IoCs
pid Process 1636 rundll32.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 5016 4576 WerFault.exe 85 -
Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI b5a8f27b7cbd207386168a43f3f0ee85a18863fcb4c7fedefc3a978f9c919926.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI b5a8f27b7cbd207386168a43f3f0ee85a18863fcb4c7fedefc3a978f9c919926.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI b5a8f27b7cbd207386168a43f3f0ee85a18863fcb4c7fedefc3a978f9c919926.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4584 b5a8f27b7cbd207386168a43f3f0ee85a18863fcb4c7fedefc3a978f9c919926.exe 4584 b5a8f27b7cbd207386168a43f3f0ee85a18863fcb4c7fedefc3a978f9c919926.exe 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found 2792 Process not Found -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2792 Process not Found -
Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 4584 b5a8f27b7cbd207386168a43f3f0ee85a18863fcb4c7fedefc3a978f9c919926.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 2792 Process not Found Token: SeCreatePagefilePrivilege 2792 Process not Found -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2792 wrote to memory of 4576 2792 Process not Found 85 PID 2792 wrote to memory of 4576 2792 Process not Found 85 PID 2792 wrote to memory of 4576 2792 Process not Found 85 PID 4576 wrote to memory of 1636 4576 6A24.exe 87 PID 4576 wrote to memory of 1636 4576 6A24.exe 87 PID 4576 wrote to memory of 1636 4576 6A24.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\b5a8f27b7cbd207386168a43f3f0ee85a18863fcb4c7fedefc3a978f9c919926.exe"C:\Users\Admin\AppData\Local\Temp\b5a8f27b7cbd207386168a43f3f0ee85a18863fcb4c7fedefc3a978f9c919926.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:4584
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C:\Users\Admin\AppData\Local\Temp\6A24.exeC:\Users\Admin\AppData\Local\Temp\6A24.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4576 -
C:\Windows\SysWOW64\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\Qfyshwqueqdpai.tmp",Dioeeedresq2⤵
- Loads dropped DLL
PID:1636
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4576 -s 5362⤵
- Program crash
PID:5016
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4576 -ip 45761⤵PID:3384
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1.0MB
MD5d373cd3842e557eb94ccda95253541d9
SHA14d734ca72dbaa20ed73613dc5ed65fa1415afe5f
SHA256adf1bc801b650274a3c62a61d0ba8061c7a114a6543e504da620a1ef306c0c0f
SHA512cfa60f07d15f5428bfbfe52d8bdb993da4c6155d0ae50e91b70cd9c4731b7b07e01686c5368e01bb67cfe18c64a0ab39cee899f490d765abd07293bf6c2e4f22
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Filesize
1.0MB
MD5d373cd3842e557eb94ccda95253541d9
SHA14d734ca72dbaa20ed73613dc5ed65fa1415afe5f
SHA256adf1bc801b650274a3c62a61d0ba8061c7a114a6543e504da620a1ef306c0c0f
SHA512cfa60f07d15f5428bfbfe52d8bdb993da4c6155d0ae50e91b70cd9c4731b7b07e01686c5368e01bb67cfe18c64a0ab39cee899f490d765abd07293bf6c2e4f22
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Filesize
792KB
MD5822d3ead416a1a85cb96e65f65cd5ae2
SHA1af32b69e2835d1cacdadb97ae6dfafccc32d1837
SHA25672bdb3a06dca8458ac9aedf06785b2d7b95a19f8b9f3f8f5be2eb4744e9c5d1d
SHA51248d0d61efd51fd2d8eb04d990b4a5b3ca34c916199d3b0a3b135d2089e028ee37f5145e4705fb75da77eaabbe12f8c4ea55775a41e1b1c68a90ce68b8c2a7260
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Filesize
792KB
MD5822d3ead416a1a85cb96e65f65cd5ae2
SHA1af32b69e2835d1cacdadb97ae6dfafccc32d1837
SHA25672bdb3a06dca8458ac9aedf06785b2d7b95a19f8b9f3f8f5be2eb4744e9c5d1d
SHA51248d0d61efd51fd2d8eb04d990b4a5b3ca34c916199d3b0a3b135d2089e028ee37f5145e4705fb75da77eaabbe12f8c4ea55775a41e1b1c68a90ce68b8c2a7260